If the last character of a chunk is a double quote and the next character at the beginning of the next chunk is also a double quote, both characters will be ignored and the output will not output any characters.

I believe this has to do with using data.charAt(i+1) and not looking at the previous field if data.charAt(i+1) is null.

Example:

test,123,"quote""d field here"

If the stream chunk ends here:

test,123,"quote""d field here"
               ^

The output value

test,123,"quoted field here

when it should read

test,123,"quote"d field here